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January 25, 2011 by admin

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Starting in the late 1970s to the early 1980s, several types of video production equipment were introduced that operated by taking a standard analog video input and digitizing it internally. This made it easier to either correct or enhance the video signal or to manipulate and add effects to the video. The digitized and processed clip from these units would then be converted back to standard analog video.

Later on in the 1970s, manufacturers of professional video broadcast equipment developed prototype digital videotape recorders in their research and development labs. None of these machines from these manufacturers were ever marketed commercially, however.

Digital video was first introduced commercially in 1986 with the Sony D-1 format, which recorded an uncompressed standard definition component video signal in digital form instead of the high-band analog forms that had been commonplace until then. Due to the expense, D-1 was used primarily by large television networks. It would eventually be replaced by cheaper systems using compressed data, most notably Sony's Digital Betacam, still heavily used as a field recording format by professional television producers, that made it in studios at their company.

One of the first digital video products to run on personal computers was PACo: The PICS Animation Compiler from The Company of Science & Art in Providence, RI, which was developed starting in 1990 and first shipped in May 1991.[1] PACo could stream unlimited-length video with synchronized sound from a single file on CD-ROM. Creation required a Mac; playback was possible on Macs, PCs, and Sun Sparcstations. In 1992, Bernard Luskin, Philips Interactive Media, and Eric Doctorow, Paramount Worldwide Video, successfully put the first fifty videos in digital MPEG 1 on CD, developed the packaging and launched movies on CD, leading to advancing versions of MPEG, and to DVD.

QuickTime, Apple Computer's architecture for time-based and streaming data formats appeared in June, 1991. Initial consumer-level content creation tools were crude, requiring an analog video source to be digitized to a computer-readable format. While low-quality at first, consumer digital video increased rapidly in quality, first with the introduction of playback standards such as MPEG-1 and MPEG-2 (adopted for use in television transmission and DVD media), and then the introduction of the DV tape format allowing recording direct to digital data and simplifying the editing process, allowing non-linear editing systems to be deployed cheaply and widely on desktop computers with no external playback/recording equipment needed. The widespread adoption of digital video has also drastically reduced the bandwidth needed for a high definition television signal (with HDV and AVCHD, as well as several commercial variants such as DVCPRO-HD, all using less bandwidth than a standard definition analog signal) and Tapeless camcorders based on flash memory and often a variant of MPEG-4.

For more info please see this page http://en.wikipedia.org/wiki/Digital_video



Web Video History


Date Area Description
late 1980s through the 1990s High cost and limited capabilities of computer hardware. Consumer-grade personal computers became powerful enough to display various media. Computer networks were still limited, and media was usually delivered over non-streaming channels, such as by downloading a digital file from a remote web server and then saving it to a local drive on the end user's computer or storing it as a digital file and playing it back from CD-ROMs.
late 1990s and early 2000s Internet users saw more advances. Greater network bandwidth. Increased access to networks, especially the Internet. The use of standard protocols and formats, such as TCP/IP, HTTP, and HTML. Commercialization of the Internet. These advances in computer networking combined with powerful home computers and modern operating systems made streaming media practical and affordable for ordinary consumers.
early 2000s onwards Multimedia content has a large volume. Media storage and transmission costs are still significant; to offset this somewhat, media files are generally compressed for both storage and streaming. Increasing consumer demand for streaming of high definition (HD) content to different devices in the home has led the industry to develop a number of technologies, such as Wireless HD, which are optimized for streaming HD video content without forcing the user to install new networking cables.
and onwards... YouTube surpasses all. Increasing consumer demand for live streaming has prompted Youtube to implement their new Live Streaming service to users. In 2008 Steve Chen reported to Sarah Meyers of ‘Pop17’ that "Live video is just something that we've always wanted to do, we've never had the resources to do it correctly, but now with Google, we hope to actually do it this year."

Web Video History c/o http://en.wikipedia.org/wiki/Streaming_media


http://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License

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